<template>
    <div>
        <!-- 首页轮播图的结构 -->
        <Carousel />
        <!-- 首页搜索医院的表单区域 -->
        <Search />
        <!-- 底部展示医院的结构 -->
        <el-row :gutter="20">
            <el-col :span="20">
                <!-- 等级子组件 -->
                <level @getLevel="getLevel" />
                <!-- 地区 -->
                <Region @getRegion="getRegion" />
                <!-- 展示医院的结构 -->
                <div class="hospital" v-if="hasHospitalArr.length > 0">
                    <Card class="item" v-for="item in hasHospitalArr" :key="item.id" :hospitalInfo="item" />
                </div>
                <el-empty v-else description="暂无数据" />
                <!-- 分页器 -->
                <el-pagination v-model:current-page="pageNo" v-model:page-size="pageSize" :page-sizes="[10, 20, 30, 40]"
                    :background="true" layout=" prev, pager, next, jumper,->, sizes,total" :total="total"
                    @current-change="currentChange" @size-change="sizeChange" />
            </el-col>
            <el-col :span="4">
                <Tip />
            </el-col>
        </el-row>
    </div>
</template>
<script setup lang="ts" name="Home">
import { onMounted, ref } from 'vue'
import { reqHospital } from "@/api/home"
//引入首页轮播图组件 
import Carousel from './carousel/index.vue'
//引入首页搜索的组件
import Search from './search/index.vue'
//引入首页等级的组件
import Level from './level/index.vue'
//引入首页地区的组件
import Region from './region/index.vue'
//引入展示医院的卡片组件
import Card from './card/index.vue'
//引入右侧的组件
import Tip from './tip/index.vue'
//分页器页码
let pageNo = ref<number>(1);
//一页展示几条数据
let pageSize = ref<number>(10);
//存储已有的医院的数据
let hasHospitalArr = ref<any>([]);
//存储已有医院的总个数
let total = ref<number>(0);
//存储医院的等级相应的数据
let hostype = ref<string>('');
//存储医院的地区
let districtCode = ref<string>('');
//组件挂载完毕,发一次请求
onMounted(() => {
    getHospitalInfo();
})

//获取已有的医院的数据
const getHospitalInfo = async () => {
    //获取医院的数据:默认获取第一页,一页十个医院的数据
    let result = await reqHospital(pageNo.value, pageSize.value, hostype.value, districtCode.value);
    if (result.data.code === 200) {
        //存储已有的的医院数据
        hasHospitalArr.value = result.data.data.content;
        //存储医院的总个数  
        total.value = result.data.data.totalElements;
    }
}
//分页器页码发生变化时的变化
const currentChange = () => {
    getHospitalInfo();
}
//分页器下拉菜单发生变化时会触发
const sizeChange = () => {
    getHospitalInfo();
}

//子组件的自定义事件：获取儿子给父组件传递过来的等级参数
const getLevel = (level: string) => {
    //收集参数
    hostype.value = level;
    // 再次发请求
    getHospitalInfo();
}
//子组件的自定义事件：获取儿子给父组件传递过来的地区参数
const getRegion = (region: string) => {
    //收集参数
    districtCode.value = region;
    // 再次发请求
    getHospitalInfo();
}
</script>
<style scoped lang="scss">
.hospital {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;

    .item {
        width: 48%;
        margin: 10px 0;
    }
}
</style>